仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | bqTINY™ |
| Part Status | Active |
| Battery Chemistry | Lithium Ion/Polymer |
| Number of Cells | 1 |
| Current - Charging | Constant - Programmable |
| Programmable Features | Current, Timer |
| Fault Protection | Short Circuit |
| Charge Current - Max | 1A |
| Battery Pack Voltage | 4.2V |
| Voltage - Supply (Max) | 16.5V |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概要
Description
The bq24012DRCR is TI’s single‑cell Li‑ion/Li‑polymer battery charger with integrated power‑path management. It accepts a 5V input (USB or adapter) and charges the cell with a programmable current using a constant‑current/constant‑voltage (CC/CV) scheme, including preconditioning and automatic recharge. It provides system power from the input while charging, so the device can run off the USB supply without draining the battery. Safety features include overvoltage/overcurrent protection, short‑circuit protection, thermal regulation, and battery‑temperature monitoring (where used). Status and control are exposed via pins such as CHRG/STAT, and the PROG pin sets the charge current. The DRCR suffix denotes the packaging variant of the IC. Ideal for portable devices needing a compact, USB‑friendly charger with power‑path management.
Features
Here are the main features of TI BQ24012DRCR (charger IC for single-cell Li‑ion):
- Single-cell Li‑ion/Li‑polymer battery charger with integrated switch-mode charger
- 5V input (USB-compatible) with support for wall adapters
- Constant-current/constant-voltage charging with programmable charge current
- 4.2V charge termination voltage suitable for Li‑ion cells
- Dynamic power-path management to power the system while charging
- Preconditioning for deeply discharged cells
- Battery temperature monitoring input (TS/thermistor)
- Automatic recharge when the battery falls below threshold
- Safety protections: overcurrent/short-circuit, overtemperature, reverse-current protection
- End-of-charge indication and status/pins suitable for LED indicators
- Small 8-pin package (DRCR) for compact designs
Note: exact programmable current range and input tolerance are described in the datasheet for the DRCR variant.
- Single-cell Li‑ion/Li‑polymer battery charger with integrated switch-mode charger
- 5V input (USB-compatible) with support for wall adapters
- Constant-current/constant-voltage charging with programmable charge current
- 4.2V charge termination voltage suitable for Li‑ion cells
- Dynamic power-path management to power the system while charging
- Preconditioning for deeply discharged cells
- Battery temperature monitoring input (TS/thermistor)
- Automatic recharge when the battery falls below threshold
- Safety protections: overcurrent/short-circuit, overtemperature, reverse-current protection
- End-of-charge indication and status/pins suitable for LED indicators
- Small 8-pin package (DRCR) for compact designs
Note: exact programmable current range and input tolerance are described in the datasheet for the DRCR variant.
Pinout
- Pin count: 16 pins (QFN package, DRCR suffix).
- Function: Single-cell Li‑ion battery charge management IC with USB/AC input and power-path management (constant-current/constant-voltage charging with input/output path control).
- Function: Single-cell Li‑ion battery charge management IC with USB/AC input and power-path management (constant-current/constant-voltage charging with input/output path control).
Manufacturer
- Manufacturer: Texas Instruments Incorporated (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital integrated circuits for a wide range of electronics. Headquartered in Dallas, Texas.
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital integrated circuits for a wide range of electronics. Headquartered in Dallas, Texas.
Application
BQ24012DRCR is a single-cell Li‑ion/Li‑polymer battery charger with integrated power-path management. It is ideal for portable devices that must be charged from USB or an AC adapter while the system continues to run (load sharing). Typical applications include:
- Mobile devices: phones, media players, cameras, GPS
- Handheld game consoles, wearables, wireless peripherals
- Portable medical devices and other single-cell battery-powered gadgets
- Development boards/prototypes needing compact, safe charging and system power delivery
- Mobile devices: phones, media players, cameras, GPS
- Handheld game consoles, wearables, wireless peripherals
- Portable medical devices and other single-cell battery-powered gadgets
- Development boards/prototypes needing compact, safe charging and system power delivery
Package
BQ24012DRCR comes in a 16‑pin QFN package (4 mm × 4 mm), RoHS and lead-free/wettable-lead variant.
